108 PEIMARY TRIAtfGULATION AND PRIMARY TRAVERSE, [bull. 201. 
[Latitude 47° 39' 30.51". Longitude 113° 07' 39.69".] 
To station- 
Azimuth. 
Back azimuth. 
Log. distance. 
Silvertip _ _ 
Pentagon . 
Rocky 
Whiteridge 
Scapegoat . 
147 11 49.77 
180 37 39.31 
234 50 07. 95 
258 08 36.32 
329 30 27.07 
327 06 24.40 
37 51.06 
55 04 43.69 
78 14 12.69 
149 43 43. 23 
Meters. 
4. 2277913 
4. 4782543 
4.4787721 
3. 9867018 
4. 6504064 
DEARBORN, LEWIS AND CLARKE COUNTY. 
The highest point of eastern end of a long ridge dividing the waters 
of the North Fork of Dearborn River (to south) from the South Fork 
of Sun River (to north). The mountain has high cliffs of Avhite lime- 
stone on east, south, and north, but the southwest slope is compara- 
tively gradual. About 4 miles south of west of Sheep Mountain. 
Best ascended from camp on Dearborn River, southwest of peak. 
Pack animals can be taken to station. 
Station mark: A copper bolt marked "IT. S. G. S. A" set in rock 
in place, about 10 feet from edge of cliff. 
[Latitude 47° 17' 27.01". Longitude 112° 33' 23.12".] 
To station 
Stonewall 
Azimuth. 
35 38 11.10 
Scapegoat 96 30 25.26 
Fairview 
Carey . . . 
Mitchell. 
Nevada . 
145 57 39.49 
197 48 35.17 
328 30 21.50 
359 01 21.40 
Back azimuth. 
o / // 
215 30 12.74 
276 18 27.59 
325 49 08. 70 
17 53 06.65 
148 42 31.19 
179 01 55.27 
Log. distance. 
Meters. 
4. 3726424 
4. 3147674 
4.4142805 
4. 4019801 
4. 6050259 
4. 7603365 
EAST BASE, LEWIS AND CLARKE COUNTY. 
On top of bank north of Northern Pacific Railway track, at first 
cut, about 1 mile west of East Helena station. 
Station mark : A bronze bench-mark tablet set in a dressed granite 
block, 27.5 feet north of the north rail of track and about 12 feet 
above it. 
